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' V. W. BLANCHARD.

SECONDARY BATTERY.

170,267,137. Patented Nov. 7, 1882..

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' 2 Sheets-Sheet 2.. V. W. BLANCHARD.

SECONDARY BATTERY.

No. 267,137. Patented Nov.7,1882.

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UNITED STATES PATENT OFFICE.

VIRGIL W. BLANCHARD, OF NEW YORK, N. Y.

SECONDARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 267,137, dated November7, 1882.

Application led July 24, 1885..

To all whom it may concern:

Be it known that I, VIRGIL W. BLANCHARD, of New York, in the county ofNew York and State of New York, have invented certain new and usefulImprovements in Secondary Batteries; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, which form part of this specification, in which- Figure1 is a plan view, and Fig. 2 is a vertical longitudinal section, of myaccumulator. Fig. 3 is a plan view, and Fig. 4 a central verticalsection, of a table having an electric lamp fed by this battery mountedthereon.

rlhis invention relates to improvements in the construction of electricaccumulators or secondary batteries; and it consists in the comvbination, with a glass or earthenware vessel, of two or more series ofconcentric leaden cylinders, an intermediate chamber for theelectrolytic liquid, a number of finely-perforated tubes placedvertically in the annular spaces between the said cylinders, and apacking of granulated lead or lead oxide.

lt consists, further, in the combination, with the above-describedaccumulator, of a suitable electric lamp and a box or case adapted to beplaced in a suitable recess or receptacle provided in an ordinary table,as hereinafter described.

A A are cylindrical cups, connected by the trough-shaped part A', whichis provided with the projecting angular edges a. The cups andconnecting-receptacle are made of 'glass or earthenware, and the cupsare provided with ribs or projections extending across their lowersides.

B B are leaden cylinders, which rise from and are secured to acommonbottoin; or they maybe made separate and otherwise connected. They are'arranged concentrically, and preferably at cqual distances apart. Thesaid cylinders rest upon the ribs b, thereby allowing free circulationof the electrolytic liquid from the receptacle A.

In the annular spaces between the electrodes,

and between them and the cups, I arrange al number of thickly perforatedtubes C,which (No model.)

at their lower ends communicate with the cups, so as to receive anddistribute the electrolytic liquid, as shown in Fig. 2. These tubes Care placed vertically in the said annular spaces, and between and aroundthem is packed a powder composed of granulated lead, lead oxide, orperoxide oflead, which granulated substance will be saturated with theelectrolytic liquid rising from the chambers below the electrodes by wayof Vthe perforated tubes.

Figs. 3 and 4 show the means for applying my device to a table or otherlnovable support.

D is a box or case, within which is secured my accumulator. On theoutside of the case D is secured an ordinary electric lamp, E, of eithertype.

d d are binding-posts for the necessary linewres b b.

D is a table of any desired style, having a suitable recess or openingto contain the oase D and contents, which as constructed may be movedabout considerably without injury.

Having described my invention, what I claim, and desire to secure byLetters Patent,

1. The combination ot' the concentric leaden -cylinders, the perforatedtubes located in the annular spaces between and having an outlet belowsaid cylinders, and a filling ofgranulated lead, oxide of lead, orperoxide of lead packed into the said annular spaces, substantially asdescribed.

2. In an electric accumulator. the cells A A, connected bytheiuid-receptacle A', provided with the angular projections a, incombination with the concentric cylinders, the perforated tubes, andgranular packing, as described.

3. ln an electric accumulator, the cup formed of two or morecommunicating sections provided withinternally-extending ribs on theirlower side, whereby, the electrodes being raised from the bottom,circulation of the electrolytic liquid is promoted, substantially asdescribed.

In testimony that I claim the foregoing as my own I ax my signature inpresence of two witnesses.

VIRGIL W. BLANCHARD.

Witnessses W. C. MoAR'rHUR, BERNARD J. KELLY.

